Fixes so windows can pass tests

[rp-tanium]

• Pass timeout in seconds to exception in windows wait function
• Added a small sleep to test_check_output_timeout to avoid busyloop on failures.
• Fixed cases where return code was expected to be -9 (is 1 on windows) after a kill
• Ensured skip test directive for signals tests and cwd tests.
• Fixed case where orig_timeout was not passed to TimeoutExpired.

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[gpshead]

similar changes from upstream committed, the testsuite now passes.